A flared elbow joint turning tool and its use method

Abstract

A tool for machining a flared elbow joint includes a base, a fixed clamping mechanism, a counterweight adjustment mechanism, and an auxiliary force-boosting unit. The fixed clamping mechanism includes a clamping block base fixed to the base, a clamping block body fixed to the clamping block base, an auxiliary clamping portion, and a first locking screw that passes through the auxiliary clamping portion and is inserted into the clamping block body. The clamping block body is provided with a first limiting groove, and the auxiliary clamping portion is provided with a second limiting groove that forms a first clamping area with the first limiting groove. The counterweight adjustment mechanism includes a counterweight base fixedly connected to the base and the clamping block base, a positioning block provided at the top of the counterweight base, an elastic clamping block, and a second locking screw. A second clamping area is formed between the first and second parts of the elastic clamping block. The auxiliary force-boosting unit includes two auxiliary force-boosting mechanisms provided on either side of the clamping block base. The auxiliary force-boosting mechanism includes a limiting base fixed to the base and an adjustment screw that rotates through the limiting base and abuts the outer side of the elastic clamping block. A method for using the tool is also disclosed.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, in particular to a tool for turning a flared elbow joint and a method for using the tool. Background Art

[0002] Flared elbow fittings are important aerospace sealing components that directly determine the overall reliability and safety of pipeline connections and oil and gas transportation equipment. Due to their diverse and complex application scenarios, flared elbow fittings come in a variety of sizes and shapes, making them a typical high-variety, low-volume part in the aerospace industry. Flared elbow fittings are typically forgings or castings with varying angles and diameters. They also feature a flange ring structure in the middle of their profile. Due to the irregular shape and angles of the parts, flared elbow fittings are more difficult to clamp and manufacture than conventional fittings.

[0003] Currently, the industry primarily uses contouring fixtures or V-blocks to clamp flared elbow fittings. The accuracy of part clamping depends on the precision of the part blank itself and the precision of the fixture, resulting in large positioning errors for flared elbow fittings, which in turn affects their machining accuracy. Furthermore, the V-blocks clamp the workpiece via line contact, which provides insufficient stability and makes the workpiece prone to shaking during machining, reducing the product yield. Contouring fixtures are expensive to manufacture and can only be used to process the same type of product. Their scope of application is limited, making them difficult to adapt to the machining of a wide variety of parts in small batches. Summary of the Invention

[0004] Based on this, it is necessary to provide a flared elbow joint turning tool and its use method with high workpiece positioning and processing accuracy, stable workpiece clamping, wide application range and low cost to address the above shortcomings.

[0005] A tool for turning a flared elbow joint, comprising a base, a fixed clamping mechanism fixed to the base, a counterweight adjustment mechanism, and an auxiliary force-increasing unit;

[0006] The fixed clamping mechanism includes a clamping block base fixed to the upper surface of the base, a clamping block main body fixed to the upper surface of the clamping block base, an auxiliary clamping part located beside the clamping block main body, a first locking screw passing through the auxiliary clamping part and inserted into the clamping block main body and threadedly connected with the auxiliary clamping part and the clamping block main body, a first limiting groove is formed on a side of the clamping block main body adjacent to the auxiliary clamping part, a second limiting groove adjacent to the first limiting groove is formed on the auxiliary clamping part, the first limiting groove and the second limiting groove together enclose a first clamping area for clamping the workpiece tube body; the first locking screw rotates when subjected to an external torsional force to adjust the width or inner diameter of the first clamping area;

[0007] The counterweight adjustment mechanism includes a counterweight base fixed to the upper surface of the base, a positioning block fixed to the top of the counterweight base and extending toward the direction close to the clamping block base, an elastic clamping block fixed on one end of the positioning block facing away from the counterweight base, and a second locking screw, the elastic clamping block including a first part and a second part arranged relatively to each other and fixedly connected to the positioning block, the second locking screw passing through the first part and inserted into the second part, and the second locking screw being threadedly connected to the first part and the second part, the counterweight base and the clamping block base being limitedly matched along the length direction of the clamping block base, a second clamping area is formed between the first part and the second part, which is located obliquely above the first clamping area and is used to clamp the part of the workpiece to be turned; the second locking screw rotates when subjected to external torsional force to adjust the width or inner diameter of the second clamping area;

[0008] The auxiliary force-enhancing unit includes two auxiliary force-enhancing mechanisms relatively arranged on both sides of the clamping block base, the auxiliary force-enhancing mechanism includes a limit base fixed on the upper surface of the base, an adjustment screw rotatably passing through the limit base and extending along the width direction of the clamping block base, and the adjustment screw is connected to the limit base screw; when subjected to external torsional force, the adjustment screw approaches or moves away from the outer side surface of the elastic clamping block to assist in adjusting the clamping force of the elastic clamping block on the part of the workpiece to be turned.

[0009] In one embodiment, the upper surface of the base is provided with a first strip guide groove and a second strip guide groove perpendicular to the first strip guide groove and connected to the first strip guide groove, the groove bottom surface of the first strip guide groove is provided with at least one first screw hole, the groove bottom surface of the second strip guide groove is provided with two second screw holes located on two opposite sides of the first strip guide groove, and the upper surface of the base is provided with two third screw holes located on two opposite sides of the first strip guide groove; the lower surface of the clamping block base is provided with a first slider that is slidably inserted into the first strip guide groove, the clamping block base is fixedly connected to the base by a first mounting screw that penetrates the upper surface of the clamping block base and is inserted into the first screw hole; the lower surface of the counterweight base is provided with a second slider that is slidably inserted into the first strip guide groove, and the counterweight base is fixedly connected to the base by a second mounting screw that penetrates the upper surface of the counterweight base and is inserted into the third screw hole; the lower surface of the limiting base is provided with a third slider that is slidably inserted into the second strip guide groove, and the limiting base is fixedly connected to the base by a third mounting screw that penetrates the upper surface of the limiting base and is inserted into the second screw hole.

[0010] In one embodiment, a first strip guide hole is provided on the clamp base, and the first mounting screw passes through the first strip guide hole and is inserted into the first screw hole; a second strip guide hole is provided on the counterweight base, and the second mounting screw passes through the second strip guide hole and is inserted into the third screw hole; a third strip guide hole is provided on the limiting base, and the third mounting screw passes through the third strip guide hole and is inserted into the second screw hole.

[0011] In one embodiment, a first inclined surface is provided on the top of the side of the clamping block body adjacent to the counterweight base, and a second inclined surface is provided on the top of the side of the auxiliary clamping part adjacent to the counterweight base, which is coplanar with the first inclined surface. The first limiting groove is opened on the first inclined surface and extends obliquely, and the second limiting groove is opened on the second inclined surface and extends obliquely.

[0012] In one embodiment, the bottom of the clamping block body is fixedly connected to the bottom of the auxiliary clamping part, the bottom of the auxiliary clamping part is provided with a deformation notch at the connection with the clamping block body, and at least the auxiliary clamping part is made of elastic material.

[0013] In one embodiment, the fixed clamping mechanism also includes an elastic protective sleeve inserted into the first clamping area and used to sleeve on the workpiece tube body, the outer contour shape of the elastic protective sleeve is adapted to the inner contour shape of the first clamping area, and the inner contour shape of the elastic protective sleeve is adapted to the outer contour shape of the workpiece tube body to be clamped; the elastic protective sleeve is provided with a avoidance notch extending along the length direction of the elastic protective sleeve and passing through the upper and lower surfaces of the elastic protective sleeve.

[0014] In one embodiment, the counterweight adjustment mechanism also includes a fine-tuning screw that passes through the counterweight base and is threadedly connected to the counterweight base. A T-slot is provided on the lower surface of the clamp block base. The T-slot passes through a side of the clamp block base adjacent to the counterweight base. The end of the fine-tuning screw is provided with a T-shaped limit block that is embedded in the T-slot and cooperates with the clamp block base along the length direction of the clamp block base.

[0015] In one embodiment, a slide groove is provided on the top of the counterweight base, and a fourth slider that slides into the slide groove is provided at the bottom of the positioning block; a fourth strip guide hole is provided on the end of the positioning block adjacent to the counterweight base, which passes through the upper and lower surfaces of the positioning block, and the positioning block is fixedly connected to the counterweight base by a fourth mounting screw that passes through the fourth strip guide hole and is inserted into the counterweight base.

[0016] In one embodiment, a clamping washer is provided on one side of the first part located in the second clamping area and a clamping washer is provided on one side of the second part located in the second clamping area. The clamping washer is fixed to the first part or the second part by a countersunk screw.

[0017] The present invention also discloses a method for using the above-mentioned flared elbow joint turning tool, which comprises the following steps:

[0018] S1. Fix the fixed clamping mechanism, the counterweight adjustment mechanism and the two auxiliary force-increasing mechanisms on the base;

[0019] S2. Fix the base to the three-jaw self-centering chuck of the automatic lathe;

[0020] S3, inserting the workpiece tube into the first clamping area of ​​the fixed clamping mechanism, and tightening the first locking screw;

[0021] S4, clamping the part of the workpiece to be turned into the second clamping area of ​​the counterweight adjustment mechanism, and tightening the second locking screw to limit the rotation of the workpiece;

[0022] S5. Fine-tune the position of the fixed clamping mechanism to align the workpiece with the tool of the automatic lathe;

[0023] S6. Start the automatic lathe and perform turning processing on the workpiece.

[0024] The implementation of the flared elbow joint turning processing tooling and the use method of the present invention can limit the rotational freedom of the workpiece by cooperating with the fixed clamping mechanism and the counterweight adjustment mechanism, lower the precision requirements for the part blank, and can quickly position, thereby improving the positioning and installation precision and processing precision of the workpiece; the two auxiliary force-enhancing mechanisms on both sides of the fixed clamping mechanism assist in adjusting the clamping force of the elastic clamping block on the part of the workpiece to be turned, thereby improving the stability of the workpiece clamping, avoiding the workpiece from shaking during the processing, and helping to improve the processing yield of the workpiece; a modular structural design is adopted, and the sizes of the first clamping area and the second clamping area are adjustable, which can be applicable to pipe joint parts of different diameters, specifications, and angles. The tooling has strong versatility, can be disassembled and stored as a whole, and is convenient and quick to put on and off the line. At the same time, it can be applied to different processing equipment, with a wider range of applications. Replacing products of different specifications only requires replacing some parts, thereby reducing the manufacturing cost of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a flared elbow joint turning tool after clamping a workpiece in one embodiment of the present invention;

[0026] Figure 2 Schematic diagram of the structure of a tool for turning a flared elbow joint according to an embodiment of the present invention;

[0027] Figure 3 A top view of a tool for turning a flared elbow joint in accordance with an embodiment of the present invention;

[0028] Figure 4 A bottom view of a flared elbow joint turning tool with its base removed, according to an embodiment of the present invention;

[0029] Figure 5 A front view of a tool for turning a flared elbow joint according to an embodiment of the present invention;

[0030] Figure 6 A schematic structural diagram of a base in one embodiment of the present invention;

[0031] Figure 7This is a structural diagram of a fixed clamping mechanism in one embodiment of the present invention;

[0032] Figure 8 A schematic structural diagram of a counterweight adjustment mechanism in one embodiment of the present invention;

[0033] Figure 9 A schematic structural diagram of an auxiliary force-amplifying mechanism in one embodiment of the present invention;

[0034] Figure 10 The present invention is a flowchart of a method for using a tool for turning a flared elbow joint in accordance with an embodiment of the present invention. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Please combine Figure 1-9The present invention discloses a flared elbow joint turning tool 10 with high workpiece positioning and processing accuracy, stable workpiece clamping, wide applicability and low cost. The tool includes a base 100 and a fixed clamping mechanism 200 fixed on the base 100, a counterweight adjustment mechanism 300 and an auxiliary force-enhancing unit. In this embodiment, the fixed clamping mechanism 200 and the counterweight adjustment mechanism 300 are arranged on the same straight line, and the two jointly clamp the workpiece 20 to be turned. The auxiliary force-enhancing units are arranged on both sides of the workpiece to assist in adjusting the clamping force on the workpiece from both sides of the counterweight adjustment mechanism 300. The fixed clamping mechanism 200 is used to clamp the workpiece tube body (non-turning part). The fixed clamping mechanism 200 includes a clamping block base 210 fixed on the upper surface of the base 100, a clamping block body 220 fixed on the upper surface of the clamping block base 210, and an auxiliary clamping part 230 located next to the clamping block body 220, a first locking screw 240 that passes through the auxiliary clamping part 230 and is inserted into the clamping block body 220 and is threadedly connected to the auxiliary clamping part 230 and the clamping block body 220, a first limiting groove is provided on a side of the clamping block body 220 adjacent to the auxiliary clamping part 230, and a second limiting groove adjacent to the first limiting groove is provided on the auxiliary clamping part 230, the first limiting groove and the second limiting groove together enclose a first clamping area 250 for clamping the workpiece tube body; the first locking screw 240 rotates when subjected to external torsional force to adjust the width or inner diameter of the first clamping area 250. Preferably, the first limiting groove is an arc groove with a major arc structure, and the second limiting groove is an arc groove with a minor arc structure, and the two together constitute a cylindrical first clamping area 250. In this way, after the tube body of the workpiece is inserted into the first clamping area 250, the workpiece is mainly supported by the clamping block main body 220, and the auxiliary clamping part 230 is used to assist in limiting the tube body of the workpiece; when the first locking screw 240 rotates and the auxiliary clamping part 230 approaches the clamping block main body 220, the inner diameter of the first clamping area 250 is reduced, so that the auxiliary clamping part 230 presses the tube body of the workpiece to achieve positioning of the workpiece tube body; when the first locking screw 240 rotates and the auxiliary clamping part 230 leaves the clamping block main body 220, the inner diameter of the first clamping area 250 increases, and the restraining force of the auxiliary clamping part 230 on the workpiece tube body is reduced until the restraining force on the workpiece tube body is released, so that the workpiece tube body can be taken out from the first clamping area 250.

[0037] The counterweight adjustment mechanism 300 is used to position the portion to be turned on the workpiece to prevent the workpiece from deflecting during machining, thereby ensuring the positioning accuracy and machining accuracy of the workpiece. The counterweight adjustment mechanism 300 includes a counterweight base 310 fixed to the upper surface of the base 100, a positioning block 320 fixed to the top of the counterweight base 310 and extending toward the clamping block base 210, an elastic clamping block 330 fixed to the positioning block 320 at one end facing away from the counterweight base 310, and a second locking screw 340. The elastic clamping block 330 includes a first portion and a second portion that are arranged opposite to each other and fixedly connected to the positioning block 320. The second locking screw 340 passes through the first portion and is inserted into the second portion, and the second locking screw 340 is threadedly connected to the first portion and the second portion. The counterweight base 310 and the clamping block base 210 are limitedly engaged along the length direction of the clamping block base 210. A second clamping area 350 is formed between the first portion and the second portion, which is located obliquely above the first clamping area 250 and is used to clamp the portion to be turned on the workpiece. The elastic clamping block 330 is made of an elastic material. Slots are cut into the block to create a first and second portion. Under external pressure, the first and second portions deform and move closer together, reducing the distance between them. The positioning block 320 is a cantilever structure fixed to the top of the counterweight base 310. This allows the elastic clamping block 330 to be suspended above the workpiece within the first clamping area 250 and position the upper portion of the workpiece to be turned. The second locking screw 340 rotates when subjected to an external torsional force to adjust the width or inner diameter of the second clamping area 350. That is, when the inner side surface of the first portion and the inner side surface of the second portion (the surface of the first portion located in the second clamping area 350 and the surface of the second portion located in the second clamping area 350) are flat, the second locking screw 340 rotates to adjust the width of the second clamping area 350. When the inner side surface of the first portion and the inner side surface of the second portion are arcuate surfaces, the second locking screw 340 rotates to adjust the inner diameter of the second clamping area 350. In this way, when the second locking screw 340 is rotated and moved toward the second portion, the second locking screw 340 causes the first portion to deform toward the second portion, thereby reducing the distance between the first portion and the second portion, thereby jointly clamping the portion of the workpiece to be turned, thereby limiting the rotational freedom of the workpiece.

[0038] The auxiliary force-amplifying unit is used to assist in adjusting the clamping force of the counterweight adjustment mechanism 300 on the part to be turned on the workpiece, so as to further improve the stability of the tooling in clamping the part to be turned on the workpiece, thereby preventing the workpiece from vibrating after clamping, and making the workpiece clamping installation more reliable. The auxiliary force-amplifying unit includes two auxiliary force-amplifying mechanisms 400 arranged on both sides of the clamping block base 210. The auxiliary force-amplifying mechanism 400 includes a limit base 410 fixed to the upper surface of the base 100, and an adjustment screw 420 that is rotatably inserted through the limit base 410 and extends along the width direction of the clamping block base 210. The adjustment screw 420 is screw-connected to the limit base 410, and the end of the adjustment screw 420 is adjacent to the outer side surface of the elastic clamping block 330 (the side of the first part or the second part facing away from the second clamping area 350). When subjected to an external torsional force, the adjustment screw 420 moves closer to or away from the outer side surface of the elastic clamping block 330 to assist in adjusting the clamping force of the elastic clamping block 330 on the part to be turned on the workpiece.

[0039] The above-mentioned flared elbow turning processing tooling can limit the rotational freedom of the workpiece by cooperating with the fixed clamping mechanism 200 and the counterweight adjustment mechanism 300, has lower requirements on the accuracy of the part blank, can be quickly positioned, and improves the positioning and installation accuracy and processing accuracy of the workpiece; the two auxiliary force-enhancing mechanisms 400 on both sides of the fixed clamping mechanism 200 assist in adjusting the clamping force of the elastic clamping block 330 on the part to be turned of the workpiece, thereby improving the stability of the workpiece clamping, avoiding the workpiece from shaking during the processing, and helping to improve the processing yield of the workpiece; a modular structural design is adopted, and the sizes of the first clamping area 250 and the second clamping area 350 are adjustable, which can be used for pipe joint parts of different diameters, specifications, and angles. The tooling has strong versatility and can be disassembled and stored as a whole. It is convenient and quick to put on and off the line. At the same time, it can be applied to different processing equipment, with a wider range of applications. Replacing products of different specifications only requires replacing some parts, thereby reducing the manufacturing cost of the tooling.

[0040] The base 100 is used to support the remaining components so that the tooling can be clamped to the chuck of the automatic lathe. In this embodiment, the base 100 is a circular plate-like structure with a cylindrical boss 110 provided on its lower surface. This cylindrical boss 110 serves as a mounting portion for the base 100. By clamping this cylindrical boss 110 to the three-jaw self-centering chuck of the automatic lathe, the tooling can be completely clamped to the automatic lathe. Alternatively, the cylindrical boss 110 can be removed from the three-jaw self-centering chuck to disassemble and store the tooling, reducing the difficulty of loading and unloading the tooling.

[0041] The upper surface of the base 100 is provided with a first strip guide groove 120 and a second strip guide groove 130 perpendicular to and connected to the first strip guide groove 120. The connecting portion of the first strip guide groove 120 and the second strip guide groove 130 is located at the center of the base 100. That is, the first strip guide groove 120 and the second strip guide groove 130 together form a cross groove passing through the center of the base 100. The center of the cross groove is the center of the base 100 and the center of the chuck of the automatic lathe. This allows the part to be turned on the workpiece to be centered on the base 100 when the workpiece is subsequently fixed. In this embodiment, it is agreed that the first strip guide groove 120 extends along the X-axis direction and the second strip guide groove 130 extends along the Y-axis direction. At least one first screw hole 140 is formed on the bottom surface of the first strip guide groove 120, two second screw holes 150 are formed on the bottom surface of the second strip guide groove 130, and two third screw holes 160 are formed on the upper surface of the base 100, which are located on the opposite sides of the first strip guide groove 120; a first slider 211 is formed on the lower surface of the clamping block base 210 and is slidably inserted into the first strip guide groove 120, and the clamping block base 210 is fixed by a first mounting screw 212 which passes through the upper surface of the clamping block base 210 and is inserted into the first screw hole 140. The counterweight base 310 is fixedly connected to the base 100; the lower surface of the counterweight base 310 is provided with a second slider 311 that is slidably inserted into the first strip guide groove 120, and the counterweight base 310 is fixedly connected to the base 100 by a second mounting screw 312 that penetrates the upper surface of the counterweight base 310 and is inserted into the third screw hole 160; the lower surface of the limiting base 410 is provided with a third slider 411 that is slidably inserted into the second strip guide groove 130, and the limiting base 410 is fixedly connected to the base 100 by a third mounting screw 412 that penetrates the upper surface of the limiting base 410 and is inserted into the second screw hole 150. Preferably, a first screw hole 140 is provided on each side of the center of the base 100 in the first strip guide groove 120, and the clamping block base 210 is fixedly connected to the base 100 by two first mounting screws 212 that penetrate the upper surface of the clamping block base 210 and are inserted into the two first screw holes 140 in a one-to-one correspondence. In this embodiment, through the sliding limit cooperation between the first slider 211 and the first strip guide groove 120, the sliding limit cooperation between the second slider 311 and the first strip guide groove 120, and the sliding limit cooperation between the third slider 411 and the second strip guide groove 130, the sliding process of the clamping block base 210, the counterweight base 310 and the limit base 410 is guided, so that the three can only move along the preset path during the position adjustment process, thereby ensuring the reliability of the position adjustment of the clamping block base 210, the counterweight base 310 and the limit base 410.During the position adjustment process of the clamping block base 210, the counterweight base 310 and the limit base 410, the positions of the clamping block base 210 and the counterweight base 310 can be adjusted along the first strip guide groove 120, and the position of the limit base 410 can be adjusted along the second strip guide groove 130, and then the corresponding mounting screws are tightened to achieve the positioning of the clamping block base 210, the counterweight base 310 and the limit base 410.

[0042] Furthermore, in this embodiment, the clamping block base 210 defines a first strip guide hole 213, through which the first mounting screw 212 passes and into the first screw hole 140. The counterweight base 310 defines a second strip guide hole 313, through which the second mounting screw 312 passes and into the third screw hole 160. The position limiting base 410 defines a third strip guide hole 413, through which the third mounting screw 412 passes and into the second screw hole 150. The length of the third strip guide hole 413 is along the Y-axis. By opening a first strip guide hole 213 on the clamping block base 210, a second strip guide hole 313 on the counterweight base 310, and a third strip guide hole 413 on the limiting base 410, during the installation process of the clamping block base 210, the counterweight base 310 and the limiting base 410, the first mounting screw 212, the second mounting screw 312 and the third mounting screw 412 are passed through the corresponding strip guide holes and inserted into the corresponding screw holes, and the mounting screws can be temporarily unlocked. After the position of the clamping block base 210, the counterweight base 310 and the limiting base 410 are fine-tuned, the corresponding mounting screws are locked again. While ensuring the stability of the tooling structure, it is suitable for clamping workpieces of different sizes and models. Further preferably, the length direction of the first strip guide hole 213 and the second strip guide hole 313 is the X-axis direction, so as to fine-tune the position of the fixed clamping mechanism 200 and the counterweight adjustment mechanism 300 along the X-axis direction, and fine-tune the position of the auxiliary force-enhancing mechanism 400 along the Y-axis direction.

[0043] In addition, the counterweight adjustment mechanism 300 also includes a fine-tuning screw 360 that penetrates the counterweight base 310 and is threadedly connected to the counterweight base 310. A threaded hole is defined in the lower portion of the counterweight base 310 for receiving the fine-tuning screw 360. A T-slot 214 is defined in the lower surface of the clamping block base 210. The T-slot 214 penetrates a surface of the clamping block base 210 adjacent to the counterweight base 310. A T-shaped stopper 361 is provided at the end of the fine-tuning screw 360, which engages with the T-slot 214 and limits the position of the clamping block base 210 along the length of the clamping block base 210. The T-slot 214 on the lower surface of the clamping block base 210 and the T-shaped stopper 361 at the end of the fine-tuning screw 360 ensure that the fine-tuning screw 360 and the clamping block base 210 are limited in the X-axis direction while ensuring that the fine-tuning screw 360 can rotate normally under external torsional forces, so that the fine-tuning screw 360 can drive the clamping block base 210 for position adjustment. By setting the fine-tuning screw 360, before installing the fixed clamping mechanism 200, the position of the breeding base 100 is first fixed and the second mounting screw 312 is locked. Then, without locking the first mounting screw 212 on the clamping block base 210, the fine-tuning screw 360 is rotated so that the fine-tuning screw 360 drives the clamping block base 210 to move along the length direction (X-axis direction) of the first strip guide groove 120, so that the clamping block base 210 moves to the center of the base 100 at the part to be turned on the workpiece, and then the first mounting screw 212 is locked. In this way, by rotating the fine-tuning screw 360, the center of the part to be turned on the workpiece can be adjusted according to the needs of workpieces of different specifications, making workpiece alignment more convenient and quick, and improving tooling accuracy.

[0044] In one embodiment, a first inclined surface is provided at the top of the clamping block body 220, adjacent to a side of the counterweight base 310. A second inclined surface is provided at the top of the auxiliary clamping portion 230, adjacent to a side of the counterweight base 310, coplanar with the first inclined surface. A first retaining groove is provided on the first inclined surface and extends obliquely, while a second retaining groove is provided on the second inclined surface and extends obliquely. Thus, the angle between the central axis of the first clamping area 250 and the central axis of the second clamping area 350 is configured to accommodate the shape of the flared elbow joint. In practical applications, multiple fixed clamping mechanisms 200 with first and second inclined surfaces at different inclinations can be provided, i.e., multiple fixed clamping mechanisms 200 with first clamping areas 250 having different inclinations can be designed to accommodate workpieces of varying angles. Furthermore, the bottom of the clamping block body 220 is fixedly connected to the bottom of the auxiliary clamping portion 230. The bottom of the auxiliary clamping portion 230 has a deformation notch 231 at its connection with the clamping block body 220, and at least the auxiliary clamping portion 230 is made of an elastic material. In this embodiment, the clamping block body 220 and the auxiliary clamping portion 230 are both made of an elastic material, such as a metal material with a relatively low elastic modulus (such as steel or aluminum). In addition, in this embodiment, the clamping block base 210, the clamping block body 220, and the auxiliary clamping portion 230 are integrally formed. The mounting block can be slotted from above the mounting block having an oblique through hole on one side to obtain the clamping block body 220 and the auxiliary clamping portion 230 located on both sides of the slot. By providing a deformation notch 231 at the bottom of the auxiliary clamping portion 230 at the connection with the clamping block body 220, the deformation ability of the auxiliary clamping portion 230 to move closer to or away from the clamping block body 220 can be improved, thereby reducing the difficulty of adjusting the size of the first clamping area 250 and thereby reducing the difficulty of clamping the workpiece.

[0045] In one embodiment, the fixed clamping mechanism 200 also includes an elastic protective sleeve 260 inserted into the first clamping area 250 and used to sleeve the workpiece tube body. The outer contour shape of the elastic protective sleeve 260 is adapted to the inner contour shape of the first clamping area 250, and the inner contour shape of the elastic protective sleeve 260 is adapted to the outer contour shape of the workpiece tube body to be clamped; the elastic protective sleeve 260 is provided with a avoidance notch 261 extending along the length direction of the elastic protective sleeve 260 and penetrating the upper and lower surfaces of the elastic protective sleeve 260. Furthermore, the hardness of the elastic protective sleeve 260 is less than the hardness of the workpiece 20 to be turned to avoid scratching or bumping the outer surface of the workpiece by the inner surface of the first clamping area 250. Preferably, the elastic protective sleeve 260 is made of low carbon steel or aluminum alloy. By providing the elastic protective sleeve 260, the clamping contact surface of the fixed clamping mechanism 200 on the workpiece is further increased, the workpiece clamping accuracy is higher, and thus the processing accuracy is more stable. The provision of relief notches 261 in the elastic protective sleeve 260 enhances its deformability, allowing it to better conform to the surface of the product being processed, thereby improving the stability of the tooling in clamping the product. Furthermore, the provision of relief notches 261 in the elastic protective sleeve 260 allows for the clamping of pipe fittings with different angles but the same diameter. Furthermore, in practical applications, multiple elastic protective sleeves 260 with varying inner diameters can be designed to provide clamping protection for workpieces of varying diameters, thereby expanding the tooling's applicability.

[0046] In one embodiment, a slot 314 is defined at the top of the counterweight base 310, and a fourth slider 321 is provided at the bottom of the positioning block 320, which slides into the slot 314. A fourth strip-shaped guide hole 322 is defined on the end of the positioning block 320 adjacent to the counterweight base 310, extending through both the upper and lower surfaces of the positioning block 320. The positioning block 320 is secured to the counterweight base 310 via a fourth mounting screw 323 inserted through the fourth strip-shaped guide hole 322 and into the counterweight base 310. Thus, the fourth strip-shaped guide hole 322 and the fourth mounting screw 323 cooperate to finely adjust the position of the positioning block 320 along the X-axis, enabling the counterweight adjustment mechanism 300 to accommodate workpieces of varying sizes, shapes, and dimensions. By disposing a fourth slider 321 at the bottom of the positioning block 320 and a slide groove 314 at the top of the counterweight base 310, the fourth slider 321 and the slide groove 314 are slidably engaged to guide the positioning block 320, thereby preventing the positioning block 320 from shaking during sliding adjustment and limiting the range of position adjustment of the positioning block 320 along the X-axis. It should be noted that in this embodiment, the central axis of the slide groove 314 along the X-axis, the central axis of the counterweight base 310 along the X-axis, and the central axis of the first strip guide groove 120 along the X-axis are collinear, thereby reducing the difficulty of aligning and installing the counterweight adjustment mechanism 300. Preferably, in this embodiment, a recessed groove 315 is formed on the upper surface of the counterweight base 310, and the slide groove 314 is formed at the bottom surface of the recessed groove 315 to accommodate the screw head of the fourth mounting screw 323 within the recessed groove 315, thereby preventing the screw head of the fourth mounting screw 323 from interfering with external structures.

[0047] In one embodiment, a limiting structure 331 is provided on the inner surface of the elastic clamping block 330 (a surface of the first portion located in the second clamping area 350 and a surface of the second portion located in the second clamping area 350) adjacent to the positioning block 320. The second locking screw 340 passes through the first portion and the limiting structure 331 and is inserted into the limiting structure 331 on the second portion, with a predetermined distance between the two limiting structures 331. Providing the limiting structure 331 on the elastic clamping block 330 strengthens the mounting area of ​​the second locking screw 340 on the elastic clamping block 330, preventing breakage or damage thereto and thereby extending the service life of the counterweight adjustment mechanism 300. Furthermore, the predetermined distance between the two limiting structures 331 limits the maximum degree of convergence between the first and second portions, thereby preventing damage to the elastic clamping block 330 due to excessive deformation. In order to expand the applicable scenarios of the tooling, in one embodiment, a clamping gasket 332 is provided on one side of the first part located within the second clamping area 350 and on one side of the second part located within the second clamping area 350. The clamping gasket 332 is fixed to the first part or the second part by a countersunk screw 333. Further preferably, a mounting notch is provided on the inner surface of the elastic clamping block 330, and the clamping gasket 332 is embedded in the mounting notch and connected to the elastic clamping screw. In this way, multiple clamping gaskets 332 of different thicknesses can be designed. In this way, when clamping different types of workpieces (flared elbow joints), clamping gaskets 332 of different thicknesses can be replaced to further adjust the width of the second clamping area 350, thereby adapting to the clamping of workpieces of different types, different outer diameters, or different thicknesses.

[0048] The aforementioned flared elbow turning tool 10 clamps the workpiece's tube body via a fixed clamping mechanism 200, limits the workpiece's rotational freedom via a counterweight adjustment mechanism 300, and utilizes two auxiliary force-boosting mechanisms 400 on either side of the fixed clamping mechanism 200 to assist in adjusting the clamping force of the elastic clamping block 330 on the workpiece's turning portion, thereby improving workpiece clamping stability. Because the base 100 includes a cross slot passing through its center, the end of the workpiece to be processed is precisely aligned with the center of the lathe's spindle after clamping. This allows for easy turning of the workpiece with minimal adjustments using only 12 screws. This tool can be used on conventional lathes, CNC lathes, CNC machining centers, and other equipment to produce flared elbows of various specifications.

[0049] Please combine Figure 1-10 The present invention also discloses a method 30 for using the above-mentioned flared elbow joint turning tool, which comprises the following steps:

[0050] S1. Fix the fixing clamping mechanism 200, the counterweight adjustment mechanism 300 and the two auxiliary force-increasing mechanisms 400 on the base 100;

[0051] S2. Fix the base 100 on the three-jaw self-centering chuck of the automatic lathe;

[0052] S3, inserting the workpiece tube into the first clamping area 250 of the fixed clamping mechanism 200, and tightening the first locking screw 240;

[0053] S4, clamping the portion of the workpiece to be turned into the second clamping area 350 of the counterweight adjustment mechanism 300, and tightening the second locking screw 340 to limit the rotation of the workpiece;

[0054] S5. Fine-adjust the position of the fixed clamping mechanism 200 to align the workpiece with the tool of the automatic lathe;

[0055] S6. Start the automatic lathe and perform turning processing on the workpiece.

[0056] Furthermore, in this embodiment, the clamping block base 210 of the fixed clamping mechanism 200, the counterweight base 310 of the counterweight adjustment mechanism 300, and the limiting base 410 of the auxiliary force amplification mechanism 400 are all provided with strip-shaped guide holes. The clamping block base 210, the counterweight base 310, and the limiting base 410 are all fixedly connected to the base 100 via mounting screws passing through the strip-shaped guide holes. In addition, a fine-tuning screw 360 is threadedly connected to the counterweight base 310. The fine-tuning screw 360 is engaged with the clamping block base 210 in a limited position along the X-axis direction, so that when the fine-tuning screw 360 is rotated, the clamping block base 210 can move relative to the counterweight base 310 along the X-axis direction to adjust the center of the portion to be turned on the workpiece.

[0057] It should be noted that the method for using the flared elbow fitting turning tool of the present invention is directed to a flared elbow fitting turning tool having the same structure as the aforementioned flared elbow fitting turning tool. For details, please refer to the previous description and will not be repeated here. The following describes the method for using the flared elbow fitting turning tool in detail, taking into account its structure.

[0058] During the use of the flared elbow joint turning tooling, the counterweight adjustment mechanism 300 is first installed on the base 100. Specifically, the second slider 311 on the lower surface of the counterweight base 310 is inserted into the first strip guide groove 120. The second mounting screw 312 is passed through the second strip guide hole 313 on the counterweight base 310 and inserted into the third screw hole 160. The second mounting screw 312 is tightened. The central axis of the counterweight base 310 coincides with the central axis of the base 100, making it easier to align and install the workpiece. At this time, the positioning block 320 and the elastic clamping block 330 are not installed on the counterweight base 310 to prevent the elastic clamping block 330 from interfering with the clamping of the workpiece.

[0059] Secondly, the fixed clamping mechanism 200 is installed on the base 100. Specifically, the first slider 211 on the lower surface of the clamping block base 210 is inserted into the first strip guide groove 120, the first mounting screw 212 is passed through the first strip guide hole 213 on the clamping block base 210 and inserted into the first screw hole 140, and the fine-tuning screw 360 on the counterweight base 310 is connected to the clamping block base 210. At this time, the first mounting screw 212 and the first locking screw 240 are not tightened, and the elastic protective cover 260 is not installed in the first clamping area 250.

[0060] Then, the two auxiliary force-enhancing mechanisms 400 are relatively arranged on both sides of the clamping block base 210, so that the third slider 411 on the lower surface of the limiting base 410 is inserted into the second strip guide groove 130, and the third mounting screw 412 is passed through the third strip guide hole 413 on the limiting base 410 and inserted into the second screw hole 150, and the third mounting screw 412 is locked. At this time, the adjusting screw 420 can be temporarily not installed, or the adjusting screw 420 can be adjusted to a loose state (so that the end of the adjusting screw 420 is away from the outer side of the elastic clamping block 330) to avoid scratches on the product due to direct contact between the adjusting screw 420 and the product, or the product is difficult to place in the second installation area due to the adjusting screw 420 squeezing the elastic clamping block 330.

[0061] After the tooling is assembled, the base 100 is mounted on the three-jaw chuck of the automatic lathe, and then the workpiece is installed. When installing the workpiece, first wrap the elastic protective sleeve 260 around the ring side of the workpiece tube body to be processed, insert the workpiece tube body into the first clamping area 250, and pre-tighten the workpiece by turning the first locking screw 240 (the first locking screw 240 is not locked at this time to provide conditions for fine-tuning the position of the workpiece when it is loaded into the second clamping area 350). The positioning block 320 is fixed to the top of the counterweight base 310 by the fourth mounting screw 323, so that the part to be turned on the workpiece enters the second clamping area 350, and then the second locking screw 340 is tightened to limit the rotational freedom of the workpiece, and the first locking screw 240 is tightened at the same time.

[0062] After the workpiece is mounted, the fine-tuning screw 360 is rotated to move the clamping block base 210, thereby centering the workpiece. The first mounting screw 212 is then tightened to limit the position of the clamping block base 210. Simultaneously, the position of the auxiliary force amplification mechanism 400 relative to the workpiece can be fine-tuned by loosening the third mounting screw 412 and adjusting the position of the limit base 410. The third mounting screw 412 is then tightened again to fine-tune the position of the auxiliary force amplification mechanism 400 relative to the workpiece. Finally, the machine tool is started to begin turning the workpiece.

[0063] The method of using the above-mentioned flared elbow turning tooling can limit the rotational freedom of the workpiece by cooperating with the fixed clamping mechanism 200 and the counterweight adjustment mechanism 300, lower the precision requirements for the part blank, and can quickly position, thereby improving the positioning and installation precision and processing precision of the workpiece; the two auxiliary force-enhancing mechanisms 400 on both sides of the fixed clamping mechanism 200 assist in adjusting the clamping force of the elastic clamping block 330 on the part to be turned of the workpiece, thereby improving the stability of the workpiece clamping, avoiding the workpiece from shaking during the processing, and helping to improve the processing yield of the workpiece; a modular structural design is adopted, and the sizes of the first clamping area 250 and the second clamping area 350 are adjustable, which can be used for pipe joint parts of different diameters, specifications, and angles. The tooling has strong versatility and can be disassembled and stored as a whole. It is convenient and quick to put on and off the line. At the same time, it can be applied to different processing equipment, with a wider range of applications. Replacing products of different specifications only requires replacing some parts, thereby reducing the manufacturing cost of the tooling.

[0064] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A tool for turning a flared elbow joint, characterized in that: It includes a base and a fixed clamping mechanism, a counterweight adjustment mechanism and an auxiliary force-increasing unit fixed on the base; The fixed clamping mechanism includes a clamping block base fixed to the upper surface of the base, a clamping block main body fixed to the upper surface of the clamping block base, an auxiliary clamping part located beside the clamping block main body, a first locking screw passing through the auxiliary clamping part and inserted into the clamping block main body and threadedly connected with the auxiliary clamping part and the clamping block main body, a first limiting groove is formed on a side of the clamping block main body adjacent to the auxiliary clamping part, a second limiting groove adjacent to the first limiting groove is formed on the auxiliary clamping part, the first limiting groove and the second limiting groove together enclose a first clamping area for clamping the workpiece tube body; the first locking screw rotates when subjected to an external torsional force to adjust the width or inner diameter of the first clamping area; The counterweight adjustment mechanism includes a counterweight base fixed to the upper surface of the base, a positioning block fixed to the top of the counterweight base and extending toward the direction close to the clamping block base, an elastic clamping block fixed on one end of the positioning block facing away from the counterweight base, and a second locking screw, the elastic clamping block including a first part and a second part arranged relatively to each other and fixedly connected to the positioning block, the second locking screw passing through the first part and inserted into the second part, and the second locking screw being threadedly connected to the first part and the second part, the counterweight base and the clamping block base being limitedly matched along the length direction of the clamping block base, a second clamping area is formed between the first part and the second part, which is located obliquely above the first clamping area and is used to clamp the part of the workpiece to be turned; the second locking screw rotates when subjected to external torsional force to adjust the width or inner diameter of the second clamping area; The auxiliary force-enhancing unit includes two auxiliary force-enhancing mechanisms relatively arranged on both sides of the clamping block base, the auxiliary force-enhancing mechanism includes a limit base fixed on the upper surface of the base, an adjustment screw rotatably passing through the limit base and extending along the width direction of the clamping block base, and the adjustment screw is connected to the limit base screw; when subjected to external torsional force, the adjustment screw approaches or moves away from the outer side surface of the elastic clamping block to assist in adjusting the clamping force of the elastic clamping block on the part of the workpiece to be turned.

2. The flared elbow joint turning tool according to claim 1, characterized in that: The top surface of the base is provided with a first strip guide groove and a second strip guide groove perpendicular to the first strip guide groove and connected to the first strip guide groove. The bottom surface of the first strip guide groove is provided with at least one first screw hole, and the bottom surface of the second strip guide groove is provided with two second screw holes located on two opposite sides of the first strip guide groove. The upper surface of the base is provided with two third screw holes located on two opposite sides of the first strip guide groove; the lower surface of the clamping block base is provided with a first slider that is slidably inserted into the first strip guide groove, and the clamping block base is fixedly connected to the base by a first mounting screw that passes through the upper surface of the clamping block base and is inserted into the first screw hole; the lower surface of the counterweight base is provided with a second slider that is slidably inserted into the first strip guide groove, and the counterweight base is fixedly connected to the base by a second mounting screw that passes through the upper surface of the counterweight base and is inserted into the third screw hole; the lower surface of the limit base is provided with a third slider that is slidably inserted into the second strip guide groove, and the limit base is fixedly connected to the base by a third mounting screw that passes through the upper surface of the limit base and is inserted into the second screw hole.

3. The flared elbow joint turning tool according to claim 2, characterized in that: A first strip guide hole is provided on the clamping block base, and the first mounting screw passes through the first strip guide hole and is inserted into the first screw hole; a second strip guide hole is provided on the counterweight base, and the second mounting screw passes through the second strip guide hole and is inserted into the third screw hole; a third strip guide hole is provided on the limiting base, and the third mounting screw passes through the third strip guide hole and is inserted into the second screw hole.

4. The tool for turning the flared elbow joint according to claim 1, characterized in that: A first inclined surface is provided on the top of the side of the clamping block adjacent to the counterweight base, and a second inclined surface is provided on the top of the side of the auxiliary clamping part adjacent to the counterweight base, which is coplanar with the first inclined surface. The first limiting groove is opened on the first inclined surface and extends obliquely, and the second limiting groove is opened on the second inclined surface and extends obliquely.

5. The tool for turning the flared elbow joint according to claim 1, characterized in that: The bottom of the clamping block body is fixedly connected to the bottom of the auxiliary clamping part. The bottom of the auxiliary clamping part is provided with a deformation notch at the connection with the clamping block body, and at least the auxiliary clamping part is made of elastic material.

6. The tool for turning the flared elbow joint according to claim 1, characterized in that: The fixed clamping mechanism also includes an elastic protective sleeve inserted into the first clamping area and used to sleeve on the workpiece tube body. The outer contour shape of the elastic protective sleeve is adapted to the inner contour shape of the first clamping area, and the inner contour shape of the elastic protective sleeve is adapted to the outer contour shape of the workpiece tube body to be clamped; the elastic protective sleeve is provided with a avoidance notch extending along the length direction of the elastic protective sleeve and passing through the upper and lower surfaces of the elastic protective sleeve.

7. The tool for turning the flared elbow joint according to claim 1, characterized in that: The counterweight adjustment mechanism also includes a fine-tuning screw that passes through the counterweight base and is threadedly connected to the counterweight base. A T-slot is provided on the lower surface of the clamping block base. The T-slot passes through a side of the clamping block base adjacent to the counterweight base. The end of the fine-tuning screw is provided with a T-shaped limit block that is embedded in the T-slot and cooperates with the clamping block base along the length direction of the clamping block base.

8. The tooling for turning the flared elbow joint according to claim 1, characterized in that: A sliding groove is provided on the top of the counterweight base, and a fourth slider that slides into the sliding groove is provided at the bottom of the positioning block; a fourth strip guide hole is provided on the end of the positioning block adjacent to the counterweight base, which passes through the upper and lower surfaces of the positioning block, and the positioning block is fixedly connected to the counterweight base by a fourth mounting screw that passes through the fourth strip guide hole and is inserted into the counterweight base.

9. The tool for turning the flared elbow joint according to claim 1, characterized in that: One side of the first part located in the second clamping area and one side of the second part located in the second clamping area are both provided with clamping washers, and the clamping washers are fixed to the first part or the second part by countersunk screws.

10. A method for using the tooling for turning the flared elbow joint according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Fix the fixed clamping mechanism, the counterweight adjustment mechanism and the two auxiliary force-increasing mechanisms on the base; S2. Fix the base to the three-jaw self-centering chuck of the automatic lathe; S3, inserting the workpiece tube into the first clamping area of ​​the fixed clamping mechanism, and tightening the first locking screw; S4, clamping the part of the workpiece to be turned into the second clamping area of ​​the counterweight adjustment mechanism, and tightening the second locking screw to limit the rotation of the workpiece; S5. Fine-tune the position of the fixed clamping mechanism to align the workpiece with the tool of the automatic lathe; S6. Start the automatic lathe and perform turning processing on the workpiece.

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